package com.atguigu.flink.chapter07;

import com.atguigu.flink.bean.WaterSensor;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction;
import org.apache.flink.streaming.api.windowing.assigners.TumblingEventTimeWindows;
import org.apache.flink.streaming.api.windowing.time.Time;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import org.apache.flink.util.Collector;
import com.atguigu.flink.util.AtguiguUtil;

import java.time.Duration;
import java.util.List;

public class Flink11_Watermark_AllowLate {
    public static void main(String[] args) {
        Configuration conf = new Configuration();
        conf.setInteger("rest.port", 20000);
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(conf);
        env.setParallelism(1);

        env
                .socketTextStream("hadoop162",9999)
                .map(line -> {
                    String[] data = line.split(",");
                    return new WaterSensor(data[0], Long.valueOf(data[1]), Integer.valueOf(data[2]));
                })
                .assignTimestampsAndWatermarks(
                        WatermarkStrategy
                                .<WaterSensor>forBoundedOutOfOrderness(Duration.ofSeconds(3))
                                .withTimestampAssigner((element, recordTimestamp) -> element.getTs())
                )
                .keyBy(WaterSensor::getId)
                .window(TumblingEventTimeWindows.of(Time.seconds(5)))
                .allowedLateness(Time.seconds(3))
                .process(new ProcessWindowFunction<WaterSensor, String, String, TimeWindow>() {
                    @Override
                    public void process(String key, Context ctx, Iterable<WaterSensor> elements, Collector<String> out) throws Exception {
                        List<WaterSensor> list = AtguiguUtil.toList(elements);

                        String msg = key + " " + list + " " + ctx.window();

                        out.collect(msg);
                    }
                })
                .print();

        try {
            env.execute();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
